package march.test_3_12;

import java.util.Scanner;

public class TestMain {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextDouble()) {
            double a = scanner.nextDouble();
            double b = scanner.nextDouble();
            double c = scanner.nextDouble();
            isThree(a,b,c);
        }
    }
    public static void isThree(double a,double b,double c) {
        if(a + b > c && a + c > b && b + c > a) {
            System.out.println("Yse");
        } else {
            System.out.println("No");
        }
    }
}
